AL8807MP-7 Diodes Inc., AL8807MP-7 Datasheet - Page 12

• Manufacturer Part Number: AL8807MP-7
• Description: LED Lighting Drivers 36V High EFF Low EMI 1A Buck LED Driver
• Manufacturer: Diodes Inc.

Specifications of AL8807MP-7

• Product Category: LED Lighting Drivers
• Rohs: yes

Applicatio
Diode Selec
For maximum
leakage at the
PN diodes, du
It is important
the maximum
operating volta
diode current.
Schottky diode
AL8807 applic
Inductor Sel
Recommended
Higher values
which result in
current over th
The inductor s
pin.
The chosen co
the required m
Suitable coils f
The inductor v
load current ra
AL8807
Document number
ons Informa
mean output cur
cations.
value should be
e maximum ope
he supply voltag
ange.
oil should have
n increased rip
age to ensure
es, e.g. B240
lection
r: DS35281 Rev. 4
d inductor valu
for use with the
e to a combina
tion
to select parts
output load cu
hould be moun
efficiency and
of inductance
The power rat
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MSS1038
NPIS64D
Par
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ation of lower fo
pple and lower
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e AL8807 are li
ation
rrent.
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8-683
erating voltage
ting is verified b
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rt No.
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or B140, with
es for the AL88
- 2
with a peak cu
are recommen
safe operation
a saturation cu
performance,
Fig. 34 Indu
(cont.
aintain operatin
e graphs).
e and temperat
cular, it is recom
orward voltage
urrent rating ab
r efficiency. Hig
n during the sw
nded at higher
o the device as
isted in the tab
by calculating t
807 are in the
urrent higher th
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ctor value wit
their low forwa
the rectifier (D
(µH)
33
68
33
L
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bove the peak c
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th input voltag
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ard voltage dro
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FFICIENCY
ture. The Sch
the power loss
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witching and a
range 33μH to
le below:
093
213
124
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and reduced r
supply voltage
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(A)
2.3
1.5
1.1
SA
output current a
AT
hottky diode als
ge and numbe
Y LOW EM
recovery time.
a current rating
3
5
1
a fast low capa
f inductance al
nd switch 'on'/'o
ave a diode vo
op and fast rev
es in order to m
coil current and
)
low resistance
through the di
100μH.
CoilCraf
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MI 36V 1A B
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oltage rating at
er of LEDs
e/stray inductan
and a continuou
acitance Schott
g at least 10%
so provides be
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Manufacturer
off' times over t
d a continuous
minimize errors
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verse recovery
lso result in a
ode.
BUCK LED
% higher than t
etter efficiency
s current rating
nce connection
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m
y, are the idea
us current ratin
tky diode with
s due to switch
the supply volt
least 15% high
smaller chang
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ng above
al choice for
ge in output
her than the
the average
hing delays,
s Incorporated
low reverse
age and
June 2012
than silicon
s to the SW
DRIVER
higher than